content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ------------------------
   * ExtensionFileFilter.java
   * ------------------------
   * (C) Copyright 2000-2004, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * $Id: ExtensionFileFilter.java,v 1.5 2007/11/02 17:50:36 taqua Exp $
   *
   * Changes (from 26-Oct-2001)
   * --------------------------
   * 26-Oct-2001 : Changed package to com.jrefinery.ui.* (DG);
   * 26-Jun-2002 : Updated imports (DG);
   * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG);
   * 14-Jun-2012 : Moved from JCommon to JFreeChart (DG);
   *
   */
  package org.jfree.chart.ui;
  
  import java.io.File;
  import javax.swing.filechooser.FileFilter;
  
  /**
   * A filter for JFileChooser that filters files by extension.
   *
   * @author David Gilbert
   */
  public class ExtensionFileFilter extends FileFilter {
  
      /** A description for the file type. */
      private String description;
  
      /** The extension (for example, "png" for *.png files). */
      private String extension;
  
      /**
       * Standard constructor.
       *
       * @param description  a description of the file type;
       * @param extension  the file extension;
       */
      public ExtensionFileFilter(final String description, final String extension) {
          this.description = description;
          this.extension = extension;
      }
  
      /**
       * Returns true if the file ends with the specified extension.
       *
       * @param file  the file to test.
       *
       * @return A boolean that indicates whether or not the file is accepted by the filter.
       */
      @Override
      public boolean accept(final File file) {
          if (file.isDirectory()) {
              return true;
          }
  
          final String name = file.getName().toLowerCase();
          if (name.endsWith(this.extension)) {
              return true;
          }
          return false;
      }
  
      /**
       * Returns the description of the filter.
       *
       * @return a description of the filter.
       */
      @Override
      public String getDescription() {
          return this.description;
      }
  
  }
  